How do I reply individually?
Peterkin, "unable to focus or concentrate." I think that is the crux of the problem, its resolution another. I've book-marked your link. Thanks for the reply.
CharonY, that's a good elaboration of Peterkin's post. I would suggest comprehension is the least of my problems, however, effectively or efficiently internalising content, as you imply, is what I need to address.
StringJunky, thinking about thinking. I like that. I certainly need to slow down (everything is a race). Really interesting suggestions. Recalling massive tracts may be superficially impressive but unless accompanied by a degree of profundity, it's a mere party trick.
Thank you all.